Vibrating Tumbler – Standard Machine Process Design
Most customers require a machine to carry out their simple task. Usually, the project size is not big but they really want professional support. So they can save the budget and get a better surface. A standard design machine with default setting is enough for the application.
In March 2017, I received an inquiry from Danny who is doing belt buckle manufacturing in Ecuador. Currently, his is doing the traditional way of grinding and polishing which is time-consuming, productivity not high. With increasing labor cost in Ecuador, Danny thinks about to change the manual process to more automotive vibrating tumbler process.
Here below is what Danny doing right now:
Centrifugal casting machine make zamak3 belt buckle Wheel grinding to remove a big burr
Rotary polishing machine to polish belt buckle before electroplating
1. Understand Production requirement
Danny told me he wants to change the manual grinding and polishing process into the vibratory finishing process. But he doesn’t know what kind of machine is suitable for him.
I asked him how many pieces of belt buckle he makes one day. He informed me he has about 2000 pcs of belt buckles to make one day. The weight of belt buckle 50-125g and size varies from 24mm, 30mm, 35mm, and 40mm.
Danny informs me he wants a vibrator machine large enough to carry out the production in 8 hours of working time. After the vibratory tumbling process, the belt buckles need to dry completely, otherwise workpieces surface may rust.
2. Vibrating Tumbler Model:
The smoothing process with plastic media for zamak3 material, the process takes about 2 hours of our experience. 500pcs/batch process, then in one day we can carry out the task without difficulty.
The belt buckle with weight 50-125g, with average 80g, 500pcs/batch, total weight per batch is 40kg. Then a VBS(B)300 vibratory finishing machine with straight wall and separation deck is suggested.
Technical data of Vibrating Tumbler VBS(B)300
3. Vibratory dryer model
The vibratory dryer machine also required for the application. Our smallest size vibratory dryer with Walther Trowal design is VB(B)200
Technical data of VD(B)200
4. Vibrating Tumbler and vibratory dryer combined as a system
We suggested to Danny that if he wants to make two machines together, we can make the vibratory finishing machine VBS(B)300 higher. And the exit of a vibratory finishing machine directly connected to the entrance of vibratory dryer. Danny is happy with the idea. Becuase this can reduce his work of goods transportation.
I make a quotation with Danny and he is happy with the price. He has still some plastic media at his home. So he considers buying the plastic media and chemicals in next shipment
6. Sample shipment and performance confirmation
Danny send me some sample of belt buckle before polishing and he wants to see the performance of vibrating tumbler machine, media, and compound. I make the processing of his belt buckle in plastic media and zirconia ball. And show him the outcome of the polishing result.
Belt buckle before polishing Belt buckle smoothing with plastic media Belt buckle polished with zirconia ball
Danny is interested in polishing of zirconia ball. Even the surface smoothing by plastic media is enough for electroplating. Finally, Danny decided to try with zirconia ball together with polishing compound send together with machines.
7. Order confirmation and delivery
Danny makes a draft order and sends me on WhatsApp. The order is confirmed the next day as we have 12 hours difference in time zone. Danny makes 30% advance payment to confirm the order and the goods will be ready in 25 days as we agreed.
When the goods are finished I take a photo for him to confirm. After all detail of goods is confirmed, Danny makes balance payment and we organize the machine shipment.
In factory order confirmation before shipment
8. Good clearance at the port and deliver to factory
The goods arrive at Guayaquil 35 days later. Danny makes the customs clearance at the port.
Machine cleared out from container Machine ready to ship to customer factory
Machine ready for installation in Danny workshop